ista.dk is a .dk domain served by 4 nameservers (a.ns14.net, b.ns14.net, c.ns14.net and 1 more). It was registered on 23 February 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.23.90.2 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by ista-dk.mx1-dk.mailanyone.net, ista-dk.mx2-dk.mailanyone.net and 1 more. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 20.23.90.2 | 600s | — | AS8075 | Microsoft Corporation | 20.0.0.0/11 | 🇳🇱 The Netherlands | Amsterdam |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| TXT Record |
|---|
| anthropic-domain-verification-07dhrj=5vxKsPEA2zS9IQR58eKJ3jRpx |
| atlassian-domain-verification=U4aJEdyz2FaexLjZKG6lqux48vzqPRMukPBaizdZ7T4an3BRBGsKZIrVSn78pELg |
| d2nBRCBeuQ9HW1mrniOetS+9dm30DsGxSPDnNRaT6yN4JA/c98wcEC084236lQbpe7QVe3Ppph8SyQzTThT2YQ== |
| knowbe4-site-verification=b92a28cae842a955eb3d7eb36a051a0d |
| miro-verification=69b3945f40f46a1ca3b4e16fe58d049fea55422d |
| MS=ms35802083 |
| MS=ms78366436 |
| openai-domain-verification=dv-LO5aSFssMk5OD13bMmdwr2t4 |
| qK/SviFK5tzEvKhsKAYB3sUEJLBQjgVGB6+Fm78WEpa8CSnhlFDNaYI9uNpFbE5Z/cBwD8B1gm17EudHWiyDSQ== |
| teamviewer-sso-verification=8bcd1a774d95464d8c97cb53ca6f5f28 |
| v=spf1 a:owa.ista.dk include:spf.ista.com include:spf.truelink.dk include:spf.mailanyone.net include:spf.protection.outlook.com -all |
| Policy | Record (ista.dk) |
|---|---|
| -all (hard fail) | v=spf1 a:owa.ista.dk include:spf.ista.com include:spf.truelink.dk include:spf.mailanyone.net include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.ista.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:rwihb7ab@ag.dmarcian.eu; |
| www CNAME | gw02.az.ista.com (all on ista.com) → 20.23.90.2 (AS8075) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 7/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2025112418 |
| Primary NS (MNAME) | a.ns14.net |
| Responsible (RNAME) | hostmaster@twt.de |
| Refresh | 43200s |
| Retry | 7200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | InterNetX GmbH |
| Registered | 2004-02-23 |
| Expires | 2027-02-28 (124d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 11:48:31 | 1214ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-30 22:48:47 | 848ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-30 08:02:25 | 682ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-20 15:58:48 | 2869ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-22 10:30:31 | 1419ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-28 07:00:11 | 1579ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-25 15:15:58 shown | 1062ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-25 12:37:23 | 1026ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-21 07:35:41 | 1407ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-21 04:28:31 | 891ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 05:20:32 | 1214ms | 4 NS 1 A 3 MX | 🔓 Insecure |